Gross anatomy

Articulations

The ball and socket articulation allows for a high degree of mobility. In comparison to the shoulder joint it permits less range of movement due to the increased depth and contact area, but displays far more stability. The acetabular labrum increases the depth of the joint 1.

The joint is surrounded by a fibrous capsule, which is attached to the acetabulum, and then attaches to the proximal aspect of the femur1. Thickenings of this capsule constitute the ischiofemoral, iliofemoral and pubofemoral ligaments.

Muscles

There are a number of different muscles that permit flexion/extension, adduction/abduction, and internal/external rotation of the hip joint. See: movements of the thigh.